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Lyrx [107]
3 years ago
13

Only number 3 not number 4

Mathematics
1 answer:
Nezavi [6.7K]3 years ago
3 0

Answer:

<h2>Yes</h2>

Step-by-step explanation:

He did set a record because 7/20 = 0.35. 11.35 < 11.4 seconds.

<em>PLEASE MARK BRAINLEST</em>

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Please help me with both of these questions I’m supper stuck
Vitek1552 [10]

Answer:

ONE SOLUTION

Step-by-step explanation:

When two points on a line are given, the equation of the line is given by the formula:

             $ \frac{y - y_1}{y_2 - y_1} = \frac{x - x_1}{x_2 - x_1} $

where $ (x_1, y_1) $ and $ (x_2, y_2) $ are the points on the line.

Here, the first set of points are: $ (-1, 3) $ and $ (0, 1) $.

Therefore, $ (x_1, y_1) = (-1, 3) $ and $ (x_2,y_2) = (0, 1) $.

The line passing through this is given by:

$ \frac{y - 3}{1 - 3} = \frac{x + 1}{1} $

$ \implies y - 3 = -2x - 2 $

∴ 2x + y - 1 =0

Now, for the second line, the points are:

$ (x_1, y_1) = (1, 4) $ and $ (x_2, y_2) = (0, 2) $.

Therefore, $ \frac{y - 4}{-2} = \frac{x - 1}{-1} $

$ \implies -y + 4 = -2x + 2 $

∴ 2x - y + 2 = 0

Now, to determine the number of solutions the two equations have, we solve these two equations,

Adding Eqn(1) and Eqn(2) we get:

4x = -1

$ \implies x = \frac{-1}{4} $

And $ y = \frac{3}{2} $.

Since, we arrive at unique values of 'x' and 'y', we say the lines have only one unique solution.

5 0
4 years ago
Which could describr the motion of an object in distance and displacement
Finger [1]

Answer:

Hope this will help you :)

Step-by-step explanation:

8 0
4 years ago
How many ways can you stack 77 books into equal piles?
dybincka [34]
Hello There!

You can stack it in 2 ways.

Hope This Helps You!
Good Luck :)
7 0
3 years ago
The expression (picture below) is equivalent to...<br><br> PLEASE HELP! I REALLY NEED IT!
Alenkinab [10]

Answer:

Step-by-step explanation:

go to this website Cymath.com

5 0
3 years ago
❤️ i need this last question
spayn [35]

Answer: 10\left(\cos90^{\circ}+i\sin90^{\circ}\right)

Step-by-step explanation:

Given

The complex number is z_1=0+10i

Complex number in polar form is given by

z=r\left(\cos \theta +i\sin \theta\right)

Compare it with the given complex number

r=10 and \sin \theta=1 which implies \theta must be 90^{\circ}

So, in the polar form, it is

z_1=10\left(\cos90^{\circ}+i\sin90^{\circ}\right)\\z_1=10e^{i\frac{\pi}{2}}

4 0
3 years ago
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